固定电话上设置“呼出限制”,如K值设置为1时,则限制下面哪种业务呼出?()
A.国内长途电话
B.本地电话
C.限制所有电话
D.国际长途电话
参考答案:C
More than two schools ______ in the city next year. [ ]
A. are built
B. were built
C. have built
D. will be built
炉内火焰辐射能量与其绝对温度的()次方成正比。
A、二
B、三
C、四
D、五